#### db_type: myrocks #### #### test_type: sda_lost_update_c1 #### #### isolation: read-uncommitted #### current_result: The query result of the current SQL statement. Each row of table is separated by a space, and the fields in each row are separated by commas expected_result: The expected result is the expected query result for each SQL that conforms to the serializability theory set TXN_ISOLATION = read-uncommitted for each session ----------wat_sda_lost_update_c1 test prepare---------- Q0-T1 execute sql: 'DROP TABLE IF EXISTS t1;' Q0-T1 execute sql: 'CREATE TABLE t1 (k INT PRIMARY KEY, v INT);' Q0-T1 execute sql: 'INSERT INTO t1 VALUES (0, 0);' Q0-T1 execute opt: 'COMMIT'; ----------wat_sda_lost_update_c1 test run---------- Q1-T1 execute opt: 'BEGIN;' Q1 finished at: 2022-4-2 11:6:54:579:769 Q2-T1 execute sql: 'SELECT * FROM t1 WHERE k=0;' current_result: (0,0) *(1) expected_result: (0,0) (2) expected_result: (0,2) Q2 finished at: 2022-4-2 11:6:54:580:599 Q3-T2 execute opt: 'BEGIN;' Q3 finished at: 2022-4-2 11:6:54:679:702 Q4-T2 execute sql: 'UPDATE t1 SET v=2 WHERE k=0;' Q4 finished at: 2022-4-2 11:6:54:680:467 Q5-T1 execute sql: 'UPDATE t1 SET v=1 WHERE k=0;' Q7-T2 execute opt: 'COMMIT'; Q5 finished at: 2022-4-2 11:6:54:884:880 Q6-T1 execute opt: 'COMMIT'; Q7 finished at: 2022-4-2 11:6:54:888:77 Q6 finished at: 2022-4-2 11:6:54:891:220 Q8-T3 execute sql: 'SELECT * FROM t1;' current_result: (0,1) (1) expected_result: (0,2) *(2) expected_result: (0,1) Q8 finished at: 2022-4-2 11:6:54:892:233 Q9-T3 execute opt: 'COMMIT'; Q9 finished at: 2022-4-2 11:6:54:896:414 Test Result: Anomaly Reason: Data anomaly is not recognized by the database, resulting in data inconsistencies